John chase



(No Model.)

- J. CHASE.

BLIND FASTENER.

N0.'601,552. Patented Mar. 29, 1898.

INVENTOR WITNESSES:

ATTORNEYS.

Nrrn STATES JOHN CHASE, OF PATERSON, NEW JERSEY, ASSIGNOR TO CHAS. H. MERSEREAU, OF SAME PLACE.

BLIND-FASTENER- SPECIFICATION forming part of Letters Patent No. 601,552, dated March 29, 1898.

Application filed November 12, 1897. Serial No. 658,226. (No model.)

To all whom it may concern.

Be it known that I, JOHN CHASE, a citizen of the United States, residing at Paterson, county of Passaic, and State of New Jersey, have invented certain new and useful Improvements in Blind Fasteners; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The object of my invention is to provide a blind lock and fastener of simple, strong, and durable construction and which can be easily and quickly secured to the blind and windowsill and by means of which the said blind can be adjusted to and locked in any desired position.

The invention consists in the improved blind lock and fastener and in the combina tion and arrangement of the various parts, substantially as will be hereinafter more fully described, and finally embodied in the claim.

Referring to the accompanying drawings,

in which like letters of reference indicate corresponding parts in each of the several views, Figure 1 is a perspective View of a portion of a window-frame and the blind arranged thereon and provided with my improvements; Fig. 2, an enlarged detail front elevation of Fig. 1, only those parts being shownwhich are necessary to fully illustrate the nature of my said invention; Fig. 3, a sectional View on the line a; a; of Fig. 2, and Fig. 4 a sectional view on the line y y of Fig. 2.

In said drawings, arepresents the windowsill, b the window-frame, and c the blind, hinged to said window-frame in the usual and well-known manner.

To the lower portion 0 of the blind c is secured incany desired manner a metallic strip or rail d, on the upper U-shaped portion of which is slidingly arranged a block 6, consisting of two halves or sections e 6 secured together by a bolt 6 and provided in its projecting portion with a pin or axis a, on which is pivotally arranged the curved arm or lever f, the other end of which is pivotally connected, as at f, to the center of the segmental-shaped block g. Said block is socured by screws or in any desired manner on the window-sill and adjacent to the windowframe and is provided in its outer periphery with a series of notches g.

The arm or lever fis provided with an elongated sloth, in which is arranged a bar or bolt 'i, suitably fulcrumed on trunnions i in recesses arranged in said arm or lever f, and is provided at its inner end with a downwardly-extending pin or projection 7?, adapted to engage the notches g of the segmentalshaped block 9, while its outer end is up-' wardly curved, as at i and penetrates the elongated slot f in the arm or lever f, so that it can be conveniently operated.

A flat spring m is secured with one end, as at m, to the arm or lever f, while its free end bears upon the inner end of the bar or bolt 2', and thus holds'the pin or projection '5 on said bar or bolt in engagement with its respective notch g in the segmental-shaped block g and prevents displacement of the bar or bolt.

In operation when it is desired to open the blind the fulcrumed bar or bolt 2' is operatedthat is to say, itscurved projecting outer end i is depressedwhereby the pin or projection '1? on its inner end is raised out of engagement with the segmental-shaped block 9 against the action of the flat spring m. The arm or lever f is now free to be swung on its fulcrum, and after the blind has reached the desired position (the block 6 sliding on the rail 01) the curved portion i of the fulcrumed bolt or bar '2: is released. The flat spring m, acting upon the inner end of the said fulcrumed bolt, forces the pin orprojection i into engagement with the respective notches g in the outer periphery of the block g. The blind is thus firmly held in position and is not liable to be moved' out of said position even by the severest storm.

\Vhen the'blind is closed, the mechanism above described acts as a lock, as will be manifest.

What I claim as new, and desire to secure by Letters Patent, is I In a blind-fastener, the combination with an arm or lever pivoted at one of its ends to the windoweframe, a notched segmental block secured to said window-frame at the pivotal.

point of said arm or lever, and a U-shaped rail secured to the blind, of a block pivotally connected to the free end of said arm, reciprocatorily connected to the rail and consisting of two separable sections engaging said rail, a curved removable bar or bolt trunnioned in open bearings in said arm or lever and engaging at one end the notched block,

said bar or bolt extending beneath said arm or lever, projecting through a slot therein at its engagement end and protruding upwardly therethrough at its other end, and an elongated spring secured at one end near the protruding end of said bar or bolt, projecting into the slot of said arm and bearing on the engagement end of said bar or bolt, substan 

